Door-operating mechanism



P. R. FORMAN.

DOOR OPERATING MECHANISM.

APPLICATION FILED JUNE 16, 1911.

1,412,855 Patented Apr. 18, 11922.

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Specification of Letters Patent.

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Application filed June 16, 1917. Serial No. 175,106.

To all whom it may concern:

Be it known that 1, Peers R. FORMAN, a citizen of: the United States,residing at (.hicago, in the county of Cook, State of Illinois, havemade a certain new and useful Invention in. Door-Operating Mechanism, ofwhich the following is a specification.

This invention relates to door operating mechanism, and particularly tothat class of same which is employed in the passenger vehicle art.

The object of the invention is to provide a door operating mechanismwhich is simple in construction, efficient in operation, economical tomanufacture, quickly and readily installed. and which requires little orno attention in the maintenance thereof. The further objects of theinvention will appear more fully hereinafter. 7 I

The invention consists substantially in the construction, combination,location, and relative arrangement of parts, all as will be more fullyhereinafter set forth, as shown by the accompanying drawings, andfinally pointed out in the appended claims.

Referring to the drawings 2-- Fig. 1 is a top plan view of the rear end.of a vehicle showing a door operating mechanism. embodying my invention.

Fig. 2 is a view partly in section and in elevation of the dooroperating mechanism employed in accordance with my invention.

Fig. 3 is a fragmentary view in side elevation of the door of apassenger vehicle op erated by a door operating mechanism emboi'lying myinvention.

The same part is designated by the same reference numeral wherever itoccurs throughout the seveal views.

It is the present practice, and particularly referring to the end dooroperating mechanism employed in the present subway system of New Yorkcity, to open and close the doors by means of an overhead actuating armcontrolled from the end of the car, which arm is pivotally mounted in asliding support. It is among the special purposes of my presentinvention to obviate the necessity of employing a sliding support forthe pivotally mounted door actuating arm. It is obvious that where anarm is pivotally mounted. due to the path of travel of the end thereofbeing circular, or in a curved direction, that to prevent the end of thearm which is secured to the door from breakin through the door, or atleast wa ping the same, it is necessary to provide a slide for thepivoted end of the arm. In accordance with my invention 1 oviate thenecessity of employing the sliding pivot as it is termed.

is the drawings 1 designates the car body provided with a sliding door2. Perma nently and rigidly secured to an overhead beam oi the car bodyis a bracket 4: which A ivotally carries therein one end of the dooractuating arm 5. The other end of the said door actuating arm 5 beingpivotally connected to a link 6. which link 6 is in turn connectedpivotally to the door 2. Any desired means maybe employedfor actuatingthe arm The means now employed being sutiicient for that purpose, and Ishow one means comprising an actuating handle 7, mounted on a sleeve 8to the top of which sleeve is secured an arm 9 to which is pivotallysecured a link 10, which link 10 is pivotally secured to the dooractuating arm 5%, that upon the locking of the handle 7 in one directionor the other the door 2 will be opened or closed as the case may be. Atthe point where the link 6 is connected to the door 2 I cut through thedoor so that when the arm 5 starts its circular movement about its pivot12 the end of the arm 5 and the tree end of the link 6 may projectthrough the slot l3 made thereby. Thus it will be seen that by allmvingthe free movement of the end of the arm 5 which is se cured to the door2 I obviate the necessity of employing a sliding pivot.

As the strains of operation of the door are imposed upon the arm 5. andas the weight of the arm is supported. wholly by the bracket 4, l designthe bracket 4: with a yoke shai ied support l4; forming part of thepivot connection between arm 5 and the yoke l, whi ch serves to supportthe arm 5 and take up the strains imposed thereon.

Having now set forth the objects and nature of my invention. and havingshown and described a specific structure embodying the features thereof,what I claim as new and useful, and of my own invention, and desire tosecure by Letters Patent, is

.1. The combination with a frame, of a door slidably carried in saidframe, said door being provided with an opening therethrough. a dooroperating arm pivotally connected at one end to a link, said link beingrirotally Connected to said door to extend through the opening therein,said arm extending in a plane at substantially right angles to the planeof said door and secured at its opposite end to said frame for solelypivotal movement relative thereto, aind means for actuating said arm.

2. The combination With a frame, of a door carried in said frame, saiddoor being provided With an opening therethrough, a door operating arm,a link pivotally connected atone end to one end of said arm, andpivotally connected at the other end to said door to extend through theopening in said door'upon actuation of the arm, said arm and linkextending in a plane angularly disposed to the plane of said door, andmeans for connecting the other end of said arm to said frame to allowpivotal movement of said arm relative to said frame, but to preventsliding movement therebetWeen, and

means for 'pivotally moving said arm relative to said frame.

3. The combination with a support, of a door, a bracket rigidly carriedby the top of said support, an arm pivotally carried; at one end by saidbracket for solely pivotal movement relative thereto and provided at itsother end-With a link, said arm and link extending in a plane at rightangles to the plane of said door, said door being cut away throughoutits thickness, and said link being pivotally connected to said door atits 7 arm, said arm and link extending in a plane i at right angles tothe plane of said door, and

means for actuating said arm.

In testimony whereof I have hereunto set my'hand on this 13th day ofJune, A. D.

PARIS R. FORMAN.

